Insulator.



No. 889,884. PATENTED JUNE 2,1908. M H. STRONG. \INSULATOR.

APPLICATION FILED JUNE 9,1906.

yum, I mmiiiunnmmfi f Q vihwoaea Y j [Z W my and stability in insulating and other objects' in'view and'the placing of.

' any proper material novel features of T combination of the parts U NIT-ED STATES PATENT OFFICE.

M HARRISON sraonc, or OZARK, Mrssounr, ASSIGNOR or ONE-HALF TO SOLOMON E. BRON- v SON, or OZARK, MISSOURI.

INSULATOR.

Specification of Letters Patent. Application filed. June 9, 1906. Serial No. 321,022.

Patented. June 2, 1908.

To all whom it may concern:

Ozark, in the county of Christian and State :have invented new anduseful of Missouri, Improvements in Insulators, following is a specification. I

This invention relates to' a Wire, cable, or trolley insulator, especially designedfor insulat'ing electric wires and-presents the idea of hanging, carrying and securing in place telephone, telegraph and electric current carcables or trolleys and provides a simple and inexpensive method by means of grooved insulating rolls or insulators made of either rotary or stationary in action and the grooved'insulating'rolls or insulators journaled in; a frame or casing of which the and working and cooperating in pairs so that the peripheral grooves correspond andthe insulators held in casin by means of an axle or journal pin of any desired'material' inserted through such frame or casing or'grooved rolls or insulators and there secured in a positive position in the frame or casing which may be :made of any desired material of i any shape, size or strength necessary for protection and safety high and low potential wires, cables ortrolleysf 'With these this idea of insulating 'wires, cables and trol-' leys arid all other electric conductors in ractical use by means of this invention and the its construction and the and their uses which are hereinafter more fully described, I

- work.-

present. the accompanyin drawing which shows the principle of'the invention and the ideaiinits' simplest form as a retaining insulow potential 'wire asused in telephone Or-telegraph line construction.

'In theaccompanying drawings: Figure'l is a side elevation of an'insulator embodying the invention. Fig. 2 is .a vertical section taken on the line 22 of Fig. L.

Fig. 3 is a lan view of the casing blank prior to bending into shape. 50.

Referring to the drawing, l 'designat es a hanger, frame or casing used to hold the insulating rolls in position, illustrated in Fig. 3, n 1gllle pieceo f blank or sheet metal ofthe form ustrated Fig. 3, produced by stamping,

\ side portions or plates of Fig.2, having position in the frame or the openings '3 an this framefor casing is made froma sin-'- cutting or otherwise formed, and comprising bearing openings 3 and a base portion or p ate 4, provided with transversely projecting, erforated ears 5, adapted to receive suitab e fastening members for attaching and securing the casing or-hanger device to a pole, tree, building or the cross arm of a pole or any other support wherewires, cables or trolleys are to be hung or secured, and the peculiar construction of this device permits it tobe installed in any position, either on the top or side of a pole the top,bottom or end of across arm; underneath the cornice or on the side of abuilding, and is so designed that the wires, cables or trolleys."may bethreaded through the grooves of the rolls or insulators, or when the device is used on a vertical plane the axle or journal pin may be removed, and spikes, rive screws or other suitable device substituted and driven through the casing and grooved roller into the support to properlyhold the insulator roll in position an thus adding strength. And it will be noted that arrange in the frame or casing 1 between the side p ates 2, which are, as seen in Fig. 1 disposed and spaced in parallel relation, is a 'pair of cooperating rotary insulating members or rollers -6 provided with central peripheral. grooves 7 and journaled in tles, axle or journal 8 extending through r removably secured in lace through the medium of retaining memers in the form of cotter pins 9 as shown here entered through suitable transverse openin s in the journal pinsor axle, it being noted t at f0I'l168Ni6I-11S6'Wl1616 the strain is greater or conditions suchas to" require a more stable axle that small bolts may be used as journalpins With threaded nuts or the frame by means of p111- any other device for holding the rolls and the other side platefor holding the journal' pin or axle and side-plates in place. Further describing this simple formof a telephone insulator as shown. in the drawing the rollers or insulators may be made of porcelain, glass or any other insulating material but in the use of this telephone insulator which is especially designed to be used as rollers whether the peripheral groove comes in the center of the The size of the groove de porcelain or not. pending upon the-sizeof the wire used in the construction work, the grooves in the insulator being made to correspond to the various standard sizes of wire, both bare and covered, in use; 'lhis-simple'form of insulator "being especially designed for. preliminary ortemporary construction work for telegraph 'or telephone lines run through the timber where the insulatorsare fastened tdtrees or limbs, andproviding-a simple and economical method of engaging and disengaging wire and repairing the work and by lator it breaka e as it permits free'movement ofthe limb without injuring either the insulator or wire andprovides a quick, simple and easy method of hanging and stretching wire as it will be noted that the wire when engaged between these two rollers may be stretched any reasonable distance and when,

so stretched and'fastened that the slack is evenly distributed' over the whole line as it becomes self compensating and-movesmost freely wherever the greatest strain comes on the wire, returning to its normal osition when the-strain is removed, witht eleast possible injury to the whole line or that part of it located between the two fastening points. While this form of an insulator is designed for construction work in a timbered country, it is ust-as serviceable and eco nomic'al in ordinary or standard construction work. p

In practice, the form of insulator sented in this drawing,

to the position of side plates 2 'as in Fig. 1, after which the rollers are secured in the frame by means of the journal pins 8, as will be understood.

In the use of this insulator 'in ordinary or standard construction work,-Where it is desired to hold the engaged wire in a rigid positionat the insulator, the a tie wire across, the top. and through the groove: of the upper roller may be used, but I I use of this 'insu-' protects thefwire, from wear and prethe blank sheet of 'metal after being stamped is bent into shape.

der, cement, tape or other-substance- The plugs orrings can b'e" made and app-Iliad byes this method byany person'doing t 's kind of .construction'work and using thesein'sulators' This'bein ail-improvement over the I present method 0 securing wires to an insulator as by theuseof this method of securing wire it presents a simple means of repair of construction-work and does notinjure the main wire by twisting or burning and may be readily removed from the main wire case}. it isdesiredto take it down or remove it to someother position.

' Having described this simple form of insulatoras shown by the drawing for thepurpose of presenting the idea of its use in a sim le way, I claim the use of this insulator ma e to embrace its necessary features and that this insulator when embracing these features and used for high potential wires, cables and trolleys can be made of any material, strength or sizeto meet the varying conrditiors of insulating and carrying electric wires, cables and trolleys, the size and strengthofthe insulator would increase correspondingly as would be necessary to protect heavy or high voltage wires, cables or trolleys fromthe elements by roofing the cas- 1 ing or frame with rubber, galvanized iron or any other practical material thus preventing snow, ice and water'from accumulating on the insulator and its connection to the pole or other support, as the use of this insulator, will eliminate this bad feature of pro er insulation and absolutely protect and ee'p the wire, cable and trolley from falling, even though the insulating rolls should be broken ersarranged in the frame and journaled for rotation respectively onsaid pintles, the latter being provided with heads to bear on one ordinary method of i of the side plates, and retaining pins entered transverselythrough the pintles 'to bear on the other side plate and adapted for securing the pintles removably in lace.

In testimony whereof, I 'afiix my signature "in presence of two witnesses.

M HARRISON STRONG. Witnesses I C. S. LoWTHoRr, SoLoMoN E. BRONSON; 

